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  • CLEO/Europe and EQEC 2011 Conference Digest
  • OSA Technical Digest (CD) (Optica Publishing Group, 2011),
  • paper CF_P7

Failure of the linear Raman gain approximation in supercontinuum generation

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Abstract

Stimulated Raman scattering plays a significant role in nonlinear fiber optics as for example in the generation of white-light supercontinua (SC) where it can lead to dynamics such as soliton fission and soliton self-frequency shift [1-3]. From a theoretical perspective, nonlinear pulse propagation and SC generation is often modelled using a generalized nonlinear Schrödinger equation where the Raman effects is included through a time-domain response function [4]. While many numerical studies of broadband SC generation employ the experimental Raman response (or an accurate Lorentzian approximation) a more simple linear approximation to the Raman response has also often been used. Although such an approach can be useful to obtain analytical insight into Raman-induced effects, it is essential to ensure that the particular model used for the Raman response is an accurate approximation for the parameter regime under study.

© 2011 Optical Society of America

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